537  
WHUS53 KGRR 040418  
SMWGRR  
LMZ848-849-868-870-040500-  
/O.NEW.KGRR.MA.W.0037.181004T0418Z-181004T0500Z/  
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED  
SPECIAL MARINE WARNING  
NATIONAL WEATHER SERVICE GRAND RAPIDS MI  
1218 AM EDT THU OCT 4 2018  
 
THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A  
 
* SPECIAL MARINE WARNING FOR...  
NEARSHORE AND OPEN WATERS FROM WHITEHALL TO MANISTEE MI...  
 
* UNTIL 100 AM EDT.  
 
* AT 1217 AM EDT, SEVERE THUNDERSTORMS CAPABLE OF PRODUCING WIND  
GUSTS TO 40 KNOTS WERE LOCATED ALONG A LINE EXTENDING FROM 14 NM  
EAST OF CLEVELAND TO 9 NM SOUTHEAST OF SHEBOYGAN, MOVING EAST AT  
60 KNOTS.  
 
HAZARD...WIND GUSTS TO 40 KNOTS.  
 
SOURCE...RADAR.  
 
IMPACT...SMALL CRAFT COULD BE DAMAGED IN BRIEFLY HIGHER WINDS AND  
SUDDENLY HIGHER WAVES.  
 
* SEVERE THUNDERSTORMS WILL REMAIN OVER MAINLY OPEN WATERS.  
 
LAT...LON 4370 8712 4403 8703 4401 8649 4394 8645  
4380 8643 4375 8645 4367 8653 4362 8654  
4346 8646 4346 8714  
TIME...MOT...LOC 0417Z 271DEG 62KT 4385 8743 4376 8745 4367 8753  
 
WATERSPOUT...POSSIBLE  
HAIL...0.00IN  
WIND...40KTS  
 

 
 
BORCHARDT  
 
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